title: Male reproductive health under threat: Short term exposure to radiofrequency radiations emitted by common mobile jammers.
abstract: BACKGROUND
  Modern life prompted man to increasingly generate, transmit and use electricity that leads to exposure to different levels of electromagnetic fields (EMFs). Substantial evidence indicates that exposure to common sources of EMF such as mobile phones, laptops or wireless internet-connected laptops decreases human semen quality. In some countries, mobile jammers are occasionally used in offices, shrines, conference rooms and cinemas to block the signal.
  
  
  OBJECTIVE
  To the best of our knowledge, this is the first study to investigate the effect of short term exposure of human sperm samples to radiofrequency (RF) radiations emitted by common mobile jammers.
  
  
  METHODS
  Fresh semen samples were collected by masturbation from 30 healthy donors who had referred to Infertility Treatment Center at the Mother and Child Hospital with their wives. Female problem was diagnosed as the reason for infertility in these couples.
  
  
  METHODS
  T-test and analysis of variance were used to show statistical significance.
  
  
  RESULTS
  The motility of sperm samples exposed to jammer RF radiation for 2 or 4 h were significantly lower than those of sham-exposed samples. These findings lead us to the conclusion that mobile jammers may significantly decrease sperm motility and the couples' chances of conception.
  
  
  CONCLUSIONS
  Based on these results, it can be suggested that in countries that have not banned mobile jammer use, legislations should be urgently passed to restrict the use of these signal blocking devices in public or private places.
authors.affiliation: Department of Medical Physics, School of Medicine, Shiraz, Iran ; The Center for Research in Ionizing and Non-ionizing Radiation, School of Paramedical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran.
authors.forename: Smj
authors.initials: S
authors.lastname: Mortazavi
authors.forename: Me
authors.initials: M
authors.lastname: Parsanezhad
authors.forename: M
authors.initials: M
authors.lastname: Kazempour
authors.forename: P
authors.initials: P
authors.lastname: Ghahramani
authors.forename: Ar
authors.initials: A
authors.lastname: Mortazavi
authors.forename: M
authors.initials: M
authors.lastname: Davari
keywords: Electromagnetic fields; male reproductive health; microwave; mobile jammers; radiofrequency; sperm motility